content: /*
   * Copyright 2016-present David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package hu.akarnokd.rxjava3.basetypes;
  
  import org.reactivestreams.*;
  
  import io.reactivex.rxjava3.internal.subscriptions.*;
  
  /**
   * If the upstream signals an error, signal an item instead.
   *
   * @param <T> the value type
   */
  final class SoloOnErrorReturnItem<T> extends Solo<T> {
  
      final Solo<T> source;
  
      final T item;
  
      SoloOnErrorReturnItem(Solo<T> source, T item) {
          this.source = source;
          this.item = item;
      }
  
      @Override
      protected void subscribeActual(Subscriber<? super T> s) {
          source.subscribe(new OnErrorReturnItemSubscriber<>(s, item));
      }
  
      static final class OnErrorReturnItemSubscriber<T> extends DeferredScalarSubscription<T>
      implements Subscriber<T> {
  
          private static final long serialVersionUID = -7631998337002592538L;
  
          final T item;
  
          Subscription upstream;
  
          OnErrorReturnItemSubscriber(Subscriber<? super T> downstream, T item) {
              super(downstream);
              this.item = item;
          }
  
          @Override
          public void onSubscribe(Subscription s) {
              if (SubscriptionHelper.validate(this.upstream, s)) {
                  this.upstream = s;
  
                  downstream.onSubscribe(this);
  
                  s.request(Long.MAX_VALUE);
              }
          }
  
          @Override
          public void onNext(T t) {
              value = t;
          }
  
          @Override
          public void onError(Throwable t) {
              complete(item);
          }
  
          @Override
          public void onComplete() {
              complete(value);
          }
  
          @Override
          public void cancel() {
              super.cancel();
              upstream.cancel();
          }
      }
  }
  